Outboard motor



Sept. 8, 1925.

J. A. MOULD OUTBOARD MOTOR Filed March 5, 1923 E v I ,WL$%

A TTORNEKS Patented Sept. 8, 1925.

JAMES A. MOULD, OF MILWAUKEE, WISCONSIN, COMPANY, 01 MILWAUKEE,

ASSIGNOB T0 EVIHBUDE IOTOB WISCONSIN.

ournoann moron.

Application ma larch 5, 1m Serial no. team.

To all whom it may concern.

Be it known that I, JAMES A. Mom-o, a citizen of the United States, residing at Milwaukee, county of Milwaukee, and State of isconsin, have invented new and useful Improvements in Outboard Motors, of which the following is a specification.

This invention relates to improvements in outboard motors. invention relates to a water circulating means with respect to the steering and power transmitting connections and a novel submersible housing construction facilitating the assembly and disposal of the parts of the motor.

It is the particular object of this invention to provide an outboard motor wherein the disposal and drive of the water pump and the arrangement of the supply duct leading from the pump to the cooling passages of the engine will be more compactly and conveniently arranged with reference to the remaining parts of the motor than has heretofore been the case.

Further objects provide a novel construction for the sub merged gear housing of an outboard motor which is adapted to expedite and facilitate the assembly of the device; to providedriving connections for the water pump such that the pump can be driven positively and conveniently from the main driving shaft of the device without necessitating thetransmission of power to the pump through the submerged gearing which drives the propeller; and to provide a construction where- ,1n the supply pipes leading from the pump to the water jackets of the engine willv be connected in a manner to afford constant communication between the pump and the engine during steering and during the reverse operation, although the position of the pump is affected both by the steering and the reverse of the motor.

In the drawings Fig. 1 is a. side elevation of the upper portions of a so-called'outboard motor embodying this invention.

Fig. 2 1s a vertical, central section on an enlarged scale through the lower portions of an outboard motor embodying this, invention.

Like parts are identified by the same ref- More particularly this novel assembly of the of this invention are to erence characters throughout the several views.

The outboard motor shown in the accompanying drawings is of the lustrated in the patent to Evinrude No. 1,001 260, August 22, 1911, and the patent to eck and Vitek No. 1,161,935, November, 30, 1915.

The bracket 5 has a portion 6 adapted to extend downwardly outside of the transom of a boat and a portion 7 provided with a screw threaded aperture in which the screw 8 may be adjusted to engage the transom with a clamping action. The bracket 5 extends upwardly above the transom and is provided with a transverse axis pin 10 upon which the entire engine and propulsion device is hingedl mounted.

he engine includesa crank case 11, a cylinder 12 to which fuel is supplied from a tank 13, a fly wheel 14 and a crank shaft 15 disposed vertically and adapted to receive power developed in the cyllnder 12. The crank shaft will, of course, be provided with a crank to which a piston and connecting rod reciprocable in the cylinder 12 will be attached in the manner shown in the patents aforesaid.

The crank shaft 15 is extended downwardly through an independently rotatable housing 16 to a bevel gear 17 which meshes with a. bevel gear 18 upon the ropeller shaft 19. The propeller shaft and gearing are disposed in a submerged gear housing, which will be designated in its entirety by the reference character 20 and will hereinafter bemore particularly described. The propeller shaft 19 extends outwardly at the 'rear of said housing and carries a propeller casing 23 into which a tiller 24 extends.

The casing 23' houses a latch mechanism which may take the form of that disclosed in the patent to Heck and Vitek aforesaid, or may constitute the' improved device disgeneral type il-' closed in a companion application copending herewith. The latch mechanism within the casing will be such that for ordinary steering pur the tubular housing 16 will be locked to. the tiller 24 to oscillate therewith. For reversing pur ses the latch mechanism can be release by partial rotation of the tiller handle as disclosed more particularly in the patent to C. J. Meyer, No. 1,191,-

those devices disclosed in the patents above referred to. As is clearly shown in Fig. 1 the tiller 24 is connected directly with the casing 23 so that the tiller cannot be oscillated from side to side without also oscillatin casing 23. This casing is in supporting re ation to the crank case 11 and cylinder 12 and the rest of the internal combustion engine which motivates the device. Accordingly, steering is seen to be accomplished by oscillating the entire engine and in fact the entire device with the exception of bracket 5 upon the axis of the tubular housing 16.

This steering movement is made possible by the provision beneath casing 23 of a sleeve-like, downward extension 26. A twopart bearing sleeve 27 clamps around the sleeve-like extension 26 of casing 23 and is provided with a flange 28 in supporting relation to the casing. The two-part bearing sleeve 27 is provided integrally with a pair of forwardly extending ears, one of which is shown in section at 29 and which are apertured to receive the transverse axis .pin 10 carried by bracket 5. Thus the hearing sleeve 27 is hingedly sup-ported directly from bracket 5 and all of the remaining parts of the outboard motor are rotatably supported from the bearing sleeve.

The tubular housin 16 extends upwardly within sleeve 26 as hest shown in Fig. 2 and through the latch mechanism where it is releasably engaged with a tiller as disclosed in the patents referred to above or' as disclosed more particularly in a companion application co'-pending herewith. Thus, whereas the sleeve 26 always moves in accordance with tiller movements the tubular shaft 16 will, upon'the occasion of reversals, rot-ate through 180 independently of sleeve 26 and of the tiller. Y

After the general explanation given above with regard to the relative movements which take place between the several parts of an outboard motor of this type, the following discussion of the specific structure of the lower parts of such a motor will be more readily understood.

The submer gear housing which is designated in 1ts entirety by the reference character 20 is preferably made up of two parts 31 and 32 which are joined in a horizontal plane including the axis of propeller shaft 19. Suitable bolts and nuts, such as are shown at 33, maybe utilized to secure the two parts of the submerged ear housing together. The assembled housing provides a recess at 34 in which the outer race of a radial and thrust anti-friction bearing for the propeller shaft 19 is provided. The bearing is designated in its entirety by the reference character 35. An end plate 36 for the housing 20 carries integrally a bearing sleeve 37 which supports the rear end of propeller shaft 19 and also serves as a seat for the thrust bearin 38. This last mentioned bearin absorbs t e thrust of bevel gear 18 throng which the pro ller shaft 19 is driven as heretofore exp ained. A bushing 39 is preferably interposed between the bearing sleeve 37 and shaft 19.

The upper half 31 of the submerged gear housing 20 is preferably formed integrally with an upwardly extending sleeve'portion 40 from which the pump cylinder 41 extends rearwardl vanes 42, 43 an 44 are integrally attached. Sleeve 40 is recessed at 45 to receive a hearing 46 for the drive shaft 15. The tubular housing 16 for the drive shaft extends downwardly into sleeve 40 and is secured therein as by set screw which are shown in dotted lines at 47. In this way the whole of the submerged gear housing 20, together. with the pump cylinder 41 and the webs or' veins 42, 43 and 44 is supported from the dirigible tubular shaft housing 16 and is rotatable therewith upon .the axis of said housing.

It {will be noted that when the tubular housing 16 is rotated on its axis the direction of thrust of the propeller 21 is not only changed, but also the vanes 42, 43, and 44.

mounted upon the upper half 31 of the gear housing 20 act as a rudder. The skeg or fin45 assists in this function and furthermore protects the propeller 21 from injury by obstacles encountered in the water.

The pump in this device includes a head portion 50 in which inlet and outlet check valves 51 and 52, respectively, are provided. A cylinder sleeve '53 may be integral with the pump head 50 and comprises a linin for cylinder 41 in which it may be secured by a set screw indicated in dotted lines at 54. The piston of the pump is preferably of the displacement type and comprises simply a tubular member 55 closed at 56 and open at the opposite end to receive a spring 57 which seats against an inner wall of the head portion 50. The spring normaland to Whichthe webs or.

or web 43 and is extended by means of a fitting 62 through the wall of the dirigible, tubular shaft housing 16.

Immediately above this point the vtubular shaft housing 16 extends between the rearportion ,69 of sleeve 26.

wardly projecting arms 64. of bracket 5- and to obviate the necessity for using a flexible water conductor and also to make impossible injury to the water tube when the tube and the shaft housing 16arerotated with respect to said arms the tube is led upwardly on the inside of shaft housing 16 Where it is protected from contact with arms 64 during its rotation with respect thereto.

That portion of the water conductor which extends upwardly from fitting 62 Within the shaft housing 16 is designated by reference character 65. It terminates in communication with a recess 66 in an annulus 67 which fits closely within. the shafthousing 16. An aperture 68 in the shaft housin provides for the egress of water from t e recess 66 to the exterior of said housing. i

The sleeve 26 which has heretofore been described as being connected with latch casing 23 is enlarged at 69 and is shouldered at 70 to provide a seat for packing ring 71. Immediately beneath the packing ring is an annulus 72 having an I-shaped cross section, the innerand outer recesses of which are connectedby one or more openings 73. The inner recess of the annulus 72 receives water emerging through opening 68 in the shaft housing 16 and the outer recess of said annulus communicates with th interior of the fitting 74 from which pipe 75 leads upwardly to the water jackets of the engine cylinders.

The arrangement is such that with the parts in the position in which they appear I in the accompanying drawings through con1 nmnication is established between the pump and the cooling jackets of the engine cylinder through pipe 61, fitting 62, internal pipe 65, recess 66 of the annulus 67,'opening 68 n shaft housing 16, o ning 73 in the outer annulus 72, fitting 4 and pipe 75. Inasmuch as the'entire engine is rotated within bearin'g'sleeve 27 for steering purposes, it will be obvious that no flexible tubing is necessary to convey water from the pump to the engine. Furthermore, in the shaft housing 16 and the ,openmg shown at 73 in the outer annulus 7 2'will normally be in registry to permit a direetflow the opening 68 of water from the internal pipe to the outer pipe 75. "When, however, the motor is reversed the shaft housing 16 and all parts connected -with said housing will be caused to rotate for 180 and during the time of such reversal the water will bev caused to flow 180 around the outside of shaft housing 16 in one of the channels of annulus 72. The escape of water beneath said annulus is prevented by a packing ring 77 which is tightened by, a packing nut 78.

If it is necessary to prevent leakage along the tubular shaft housing 16 a'smallperipheral recess 79 may be formed in the enlarged This recess may be drained by a duct 80 leading to the exterior of the device.

The construction described has many advantages. In the first place 'the assembly of the entire propulsion device or outboard motor is facilitated. The two part construction of the submerged gear housing 20 makes it possible to inspect the gearing and shafting during assembly to ascertain whether or not the alignment. The drive shaft 15 with the cam 60, the assembled ball bearing 46 and the bevel gear 17 all-ready positioned thereon is simply thrust into the lower end of housing member 31 and up through the shaft housing 16 until the outer raceof ball bearing 46 is properly positioned in th recess 45..

Thereupon the propeller shaft 19 with all of its bearings and with its bevel gear 18 in assembled relation upon it is set in place within the upper housing member 31 and the lower. housing member 32 is clamped to the upper housing member to seal the device. Thereafter the pump mechanism can be inserted' into the cylinder member 41 bodily and secured in place by set screw 54. It will be noted that the pump is actually built into the rudder and that the whole structure-is not only easily assembled but is compact and has great strength.

In many outboard motors which have previously been constructed the pump has been driven from a cam on the propeller shaft. In the present device the cam which drives the pump is mounted directly upon the drivthe entire engine moves with the pumpcarrying housing for ordinary steering purposes and, secondly, the channeled annuli providing for a continuous flow of water beparts are in proper tween relatively rotatable parts, whereby the flow is not interrupted at such times as the motor is reversed and the pump and attached mechanism are caused to rotate with respect to the engine.

I claim 1. An outboard motor including an upright drive shaft, a substantially horizontal propeller shaft, gearing connecting the drive shaft with the propeller shaft, a housing for said gearin and said propeller shaft provided with hearings for the propeller shaft and a sleeve extending upwardly about sai drive shaft from said housing and provided with a laterally extending arm in communication with the interior of said sleeve, said arm comprising a support for a pump.

2. An outboard motor including, an 'upright drive shaft, a substantially horizontal propeller shaft, gearing connecting said drive shaft with said propeller shaft, ahousing for said gearing, a sleeve extendingl upwardly from said housing about said rive shaft, a laterally projecting sleeve in communication with the interior of. said first mentioned sleeve, and pump mechanism including a iston operable within said laterally pro ecting sleeve and arranged for actuation from said drive shaft.

3. In an outboard motor the combination with a drive shaft, of a sleeve surrounding said shaft and extending in the direction thereof, a subordinate sleeve projecting laterally from a submersible portion of the first mentioned sleeve, pump mechanism including a piston reciprocable in said subordinate sleeve, and motion transmitting connections for imparting a reciprocating movement to said pump mechanism from said drive shaft.

4. In an outboard motor the combination with a drive shaft, of a sleeve surrounding said shaft and extending in the direction thereof, a subordinate sleeve projectin laterally from a submersible portion 0 the first mentioned sleeve, pum mechanism including a piston reciproca le in said subordinate sleeve, and a cam upon said drive shaft adapted to act directly upon said piston.

5. In an outboard motor the combination with a drive shaft, of a dirigible housing enclosing said shaft, a sleeve projecting laterally from saidhousingand in communication therewith, a pump head provided with valved inlet and outlet ports and with a lining receivable into said sleeve, a pump plunger reciprocable within said lining and provided with a spring normally urging it in the direction of said drive shaft, and a cam on the drive shaft in registry with said plunger and adapted to impart reciprocatory motion thereto.

6. In an outboard motor the combination with an angularly related drive shaft and propeller shaft provided with motion transmitting connectionsfor actuating the latter from the former, of an eccentric device mounted upon the drive shaft for rotation therewith, and a housing enclosing a portion of each of said shafts together with said motion transmitting connections and said eecentric device, a pump cylinder supported from said housing and extending laterally with respect to the drive shaft in registry with the eccentric device thereon, and a set of webs integrally connecting said cylinder with portions of said housing above and below it, a V.

7. In an outboard motor a housing element comprising a two-part submersible casing, the parts thereof being separable sub-' stantially in a horizontal plane and provided stantially in a horizontal plane and provided with mutually registering recesses. adapted to receive bearings for a shaft, an

integral, tubular element extending outwardly from one of the parts of said casing, a

and projecting laterally therefrom in a plane ncluding the axis of said casing, and a web integrally connecting said cylinder with said tubular element above the cylinder and with.

said element and with a part of saidcasing below the cylinder. i

9. In an outboard motor a submersible housing including a casing having two parts separably joined together on a lane including the major axis of said casing, a fin extending downwardly beneath a first part 1 of said casing, a drive shaft housing extendmg oppositely from a second part of said casing substantially at right angles to the axis thereof and in communication with the axis of said casing, a drive shaft housing.

integral with one of the parts of said casing and extending upwardly therefrom, a fin extending downwardly from the other part of therefrom in a plane inpump cylinder integral with said element nuance said casing, fins integrally connected with said drive shaft housing and with the up 1 part of said casing and extending forwar ly and rearwardly from said housing, one of said fins being formed to provide a pump cylinder in communication with the inter or of said housing, a pump head provided with valved inlet and outlet orts and connected, with said cylinder, an a dischar e plpe leadin from the outlet port of sai pump head about the periphery of the adjacent fin in the direction of said housin 11. An outboard motor including a j acketed cylinder mounted for oscillation upon a' substantially vertical axis, a drive shaft extending downwardlyl therefrom co-axially with the axis of osci ation of said cylinder,

a housing for said drive shaft, a ropeller arranged to be driven from said drive shaft and supported from said housing, whereby said motor may be steered or reversed by a suitable actuation of said housing, a pump supported from said housing and provided wit 1 a piston arranged for reciprocation from said drive'shaft, a bracket in supporting relation to said cylinder and provided with rearwardly rejecting arms embracing said housing, and a supply pipe from said pump leading upwardly within said housing and between the wall thereof and the drive shaft therein.

12. In an outboard motor, the combination with an upright drive shaft and a tubular shaft housing, of a tubular ump casing mounted on said housing an laterally therefrom, a piston reci rocable in said casing, and an excentric mem r mounted on said drive shaft and operatively associated with said piston for the actuation thereof, together with a pump head mounted on said pump casing an providin suitable valves to control the direction 0 flow of liquid acted on by said piston. I

13. An outboard motor including a jacketed cylinder, an upright drive shaft, said cylinder being mounted for oscillation coaxially with said shaft, a tubular housing for said shaft supported for oscillation coaxially therewith and in unison with said cylinder for steering purposes and rotatable independently of said cylinder for reversing purposes, a propeller supported from said housing and arranged for actuation from said drive shaft, whereby said motor may be steered and reversed by the oscillation and rotation of saidhousing, a pump supported from said housing, a pipe leading upwardly from said pump and connected with said housing for movement therewith and with said pump, a pipe leading downwardly from the jacket of said cylinder and connected therewith for oscillation with said cylinder, and means for establishing permanent communication between said pipes irrespective of their relative positions.

projecting 4 14. An outboard motor including an upright drive shaft, a housing for said shaft mounted for oscillation and rotation coaxially with said shaft a propeller arranged for actuation from said drive shaft and su ported from said housing, whereby the oscilation and rotation of said housing will, respectively, steer and reverse the thrust of said propeller, pump mechanism arranged for actuation from said drive shaft and sup- 7 ported from said housing for oscillation and l rotation therewith, an outlet pipe for said pump and a second pi e arranged for oscil-' ation with said drive s aft but not for rotationtherewith, said first and second pipes being in communication irrespective of the rotation of said housing.

15. In an outboard motor the combination with a bracket, of a bearing sleeve supported therefrom, an internal combustion engine mounted for oscillation co-axially with said sleeve and provided witha drive shaft extending therethrou h, an internal sleeve connected with said engine and-extending through said bearing sleeve, a tubular shaft housing within said internal sleeve and en closing said shaft, a pump supported from said shaft housing, an annulus connected with said housing and provided with a perip'heral recess pump, an annulus connected with said internal sleeve'and provided with an annular recess in registry with the peripheral recess of the first mentioned annulus, said recesses bein 'in communication, anda pipe 100 extending from the recess of the second annulus to the engine, whereby said pump and engine are in constant communicationirrespective of the relative rotative position of said inner sleeve and shaft housing.

16. An outboard motor including an internal combustion engine provided with'an upright drive shaft, a dirigible housing enclosing said shaft and rotatably adjustable independently of said engine, a sleeve 'connected with said engine and encirolin the housing, a p'umpsupported from the ousing, a pipe leading upwardly from the pump within the housing, an, annulus within the housing provided with a recess in communi- 115 cation with said pipe, an annulus exterior to the housing rovided with an annular recess in communication with the recess of the inner annulus through an aperture of the housing, and a-pipe connected with said en- 120 gine and incommunication with the annular recess of the outer annulus. I

17 An outboard motor including an internal combustion engine provided with an upright drive shaft, a dirigible housing surlower end of said sleeve being spac pein communication with said ripherally fromsaidhousing and internall thro an aperture ineaid housing with threaded, a. pipe leading upwardly withix i said fige a second pipe connected with said the housing and adapted to deliver fluid sleevean incommumcation with the recess a threughanapermreinthewallthereof,an Vofsaidannuluaandaringnutinthreaded 5 annulus within the ap'ace between eent with said sleeve below said ansaid sleeve and said housing provided with nu us and encirc said hcus' anannularreceseandincommunication AMESA. OULD. 

